The Xperia Tablet Z, however, will not be a small-size tablet like the iPad mini. Rather, the Tablet Z will have a 10.1-inch screen with HD resolution of 1920 by 1200 pixels, according to stats released by Sony.

The Xperia tablet will be waterproof, like its cousin the Xperia Z smartphone, which was unveiled recently at the Consumer Electronics Show in Las Vegas. Sony said the tablet will have an 8-megapixel rear camera and Near Field Communication technology to allow the tablet to pass files to other NFC devices simply by tapping them. It will be available in black or white.

Inside, the Xperia Tablet Z will have a 1.5-gigahertz quad-core processor and runs on Android 4.1 Jelly Bean, the second most recent version of Google's mobile operating system.

The Xperia Tablet Z is scheduled to arrive in Japan this autumn. Sony hasn't said whether the device will be released in other countries.